fix: zlib-ng build error on mingw (#6402)

Fixed integer size mismatch in Windows builds in issue  #5730.
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: hyoklee

src/H5Zdeflate.c

@@ -173,13 +173,14 @@ H5Z__filter_deflate(unsigned flags, size_t cd_nelmts, const unsigned cd_values[]
         const Bytef *z_src = (const Bytef *)(*buf);
         Bytef       *z_dst; /*destination buffer		*/
 #if defined(H5_HAVE_ZLIBNG_H)
-        uLongf z_dst_buf_size = (uLongf)zng_compressBound(nbytes);
+        size_t z_dst_buf_size = zng_compressBound(nbytes); /* 5730 */
+        size_t z_dst_nbytes   = z_dst_buf_size;
 #else
         uLongf z_dst_buf_size = (uLongf)compressBound(nbytes);
+        uLongf z_dst_nbytes   = z_dst_buf_size;
 #endif
-        uLongf z_dst_nbytes = z_dst_buf_size;
-        uLong  z_src_nbytes = (uLong)nbytes;
-        int    aggression; /* Compression aggression setting */
+        uLong z_src_nbytes = (uLong)nbytes;
+        int   aggression; /* Compression aggression setting */
 
         /* Set the compression aggression level */
         H5_CHECKED_ASSIGN(aggression, int, cd_values[0], unsigned);

test/chunk_info.c

@@ -490,7 +490,6 @@ test_get_chunk_info_highest_v18(hid_t fapl)
     void   *inbuf      = NULL;     /* Pointer to new buffer */
     hsize_t chunk_size = CHK_SIZE; /* Size of a chunk, can be compressed or not */
     hsize_t ii, jj;                /* Array indices */
-    int     n;                     /* Used as chunk index, but int to avoid conversion warning */
     herr_t  ret;                   /* Temporary returned value for verifying failure */
 
     TESTING("getting chunk information in file with version prior to 1.10");
@@ -547,7 +546,11 @@ test_get_chunk_info_highest_v18(hid_t fapl)
 
     /* Perform compression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-    ret = zng_compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
+    {
+        size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+        ret                    = zng_compress2(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes, aggression);
+        z_dst_nbytes           = (uLongf)z_dst_nbytes_sz;
+    }
 #else
     ret = compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
 #endif
@@ -578,9 +581,8 @@ test_get_chunk_info_highest_v18(hid_t fapl)
     /* Write only NUM_CHUNKS_WRITTEN chunks at the following logical coords:
      * (0,2) (0,3) (1,2) (1,3)
      */
-    n = 0;
     for (ii = START_CHK_X; ii < END_CHK_X; ii++)
-        for (jj = START_CHK_Y; jj < END_CHK_Y; jj++, n++) {
+        for (jj = START_CHK_Y; jj < END_CHK_Y; jj++) {
             offset[0] = ii * CHUNK_NX;
             offset[1] = jj * CHUNK_NY;
             ret       = H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, chunk_size, (void *)inbuf);

test/direct_chunk.c

@@ -212,7 +212,11 @@ test_direct_chunk_write(hid_t file)
 
     /* Perform compression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-    ret = zng_compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
+    {
+        size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+        ret                    = zng_compress2(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes, aggression);
+        z_dst_nbytes           = (uLongf)z_dst_nbytes_sz;
+    }
 #else
     ret = compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
 #endif
@@ -295,7 +299,11 @@ test_direct_chunk_write(hid_t file)
 
     /* Perform compression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-    ret = zng_compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
+    {
+        size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+        ret                    = zng_compress2(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes, aggression);
+        z_dst_nbytes           = (uLongf)z_dst_nbytes_sz;
+    }
 #else
     ret = compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
 #endif
@@ -1686,7 +1694,10 @@ test_direct_chunk_read_no_cache(hid_t file)
 
             /* Perform decompression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-            ret = zng_uncompress(z_dst, &z_dst_nbytes, z_src, z_src_nbytes);
+            {
+                size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+                ret                    = zng_uncompress(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes);
+            }
 #else
             ret = uncompress(z_dst, &z_dst_nbytes, z_src, z_src_nbytes);
 #endif
@@ -1892,7 +1903,10 @@ test_direct_chunk_read_cache(hid_t file, bool flush)
 
             /* Perform decompression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-            ret = zng_uncompress(z_dst, &z_dst_nbytes, z_src, z_src_nbytes);
+            {
+                size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+                ret                    = zng_uncompress(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes);
+            }
 #else
             ret = uncompress(z_dst, &z_dst_nbytes, z_src, z_src_nbytes);
 #endif

tools/test/perform/direct_write_perf.c

@@ -245,7 +245,9 @@ create_file(hid_t fapl_id)
 
         /* Perform compression from the source to the destination buffer */
 #if defined(H5_HAVE_ZLIBNG_H)
-        ret = zng_compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
+        size_t z_dst_nbytes_sz = (size_t)z_dst_nbytes;
+        ret                    = zng_compress2(z_dst, &z_dst_nbytes_sz, z_src, z_src_nbytes, aggression);
+        z_dst_nbytes           = (uLongf)z_dst_nbytes_sz;
 #else
         ret = compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
 #endif

tools/test/perform/zip_perf.c

@@ -166,7 +166,9 @@ static void
 compress_buffer(Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)
 {
 #if defined(H5_HAVE_ZLIBNG_H)
-    int rc = zng_compress2(dest, destLen, source, sourceLen, compress_level);
+    size_t destLen_sz = (size_t)*destLen;
+    int    rc         = zng_compress2(dest, &destLen_sz, source, sourceLen, compress_level);
+    *destLen          = (uLongf)destLen_sz;
 #else
     int rc = compress2(dest, destLen, source, sourceLen, compress_level);
 #endif